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2006688080 = 24542159581
BaseRepresentation
bin111011110011011…
…1010000101010000
312011211221022112202
41313212322011100
513102203004310
6531042142332
7100504365365
oct16746720520
95154838482
102006688080
1193a7a5501
124800519a8
1325c9795c7
1415071a46c
15bb2843a5
hex779ba150

2006688080 has 40 divisors (see below), whose sum is σ = 4676710344. Its totient is φ = 800755200.

The previous prime is 2006688049. The next prime is 2006688091. The reversal of 2006688080 is 808866002.

It can be written as a sum of positive squares in 4 ways, for example, as 13601344 + 1993086736 = 3688^2 + 44644^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 63470.

Almost surely, 22006688080 is an apocalyptic number.

2006688080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2006688080 is an abundant number, since it is smaller than the sum of its proper divisors (2670022264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2006688080 is a wasteful number, since it uses less digits than its factorization.

2006688080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60015 (or 60009 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 2006688080 is about 44796.0721492409. The cubic root of 2006688080 is about 1261.3238961262.

The spelling of 2006688080 in words is "two billion, six million, six hundred eighty-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 421 842 1684 2105 3368 4210 6736 8420 16840 33680 59581 119162 238324 297905 476648 595810 953296 1191620 2383240 4766480 25083601 50167202 100334404 125418005 200668808 250836010 401337616 501672020 1003344040 2006688080